package com.mcy.threed.jpct;

import java.lang.reflect.Field;
import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLDisplay;
import javax.microedition.khronos.opengles.GL10;
import com.mcy.study.R;
import com.threed.jpct.Camera;
import com.threed.jpct.FrameBuffer;
import com.threed.jpct.Light;
import com.threed.jpct.Logger;
import com.threed.jpct.Object3D;
import com.threed.jpct.Primitives;
import com.threed.jpct.RGBColor;
import com.threed.jpct.SimpleVector;
import com.threed.jpct.Texture;
import com.threed.jpct.TextureManager;
import com.threed.jpct.World;
import com.threed.jpct.util.BitmapHelper;
import com.threed.jpct.util.MemoryHelper;
import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.opengl.GLSurfaceView.Renderer;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;

public class JpctTestActivity extends Activity {
	private static JpctTestActivity master = null;

	private GLSurfaceView mGLView;
	private JpctRenderer renderer = null;
	private World world = null;
	private RGBColor back = new RGBColor(50, 50, 100);

	private float touchTurn = 0;
	private float touchTurnUp = 0;

	private float xpos = -1;
	private float ypos = -1;

	private Object3D cube = null;
	private int fps = 0;
	private boolean gl2 = true;

	private Light sun = null;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		Logger.log("onCreate");

		if (master != null) {
			copy(master);//?????
		}
		
		super.onCreate(savedInstanceState);
		//setContentView(R.layout.activity_jpct_test);
		mGLView = new GLSurfaceView(getApplication());

		if (gl2) {
			mGLView.setEGLContextClientVersion(2);
		} else {
			mGLView.setEGLConfigChooser(new GLSurfaceView.EGLConfigChooser() {
				public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {
					// Ensure that we get a 16bit framebuffer. Otherwise, we'll
					// fall back to Pixelflinger on some device (read: Samsung
					// I7500). Current devices usually don't need this, but it
					// doesn't hurt either.
					int[] attributes = new int[] { EGL10.EGL_DEPTH_SIZE, 16, EGL10.EGL_NONE };
					EGLConfig[] configs = new EGLConfig[1];
					int[] result = new int[1];
					egl.eglChooseConfig(display, attributes, configs, 1, result);
					return configs[0];
				}
			});
		}

		renderer = new JpctRenderer();
		mGLView.setRenderer(renderer);
		setContentView(mGLView);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.jpct_test, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		int id = item.getItemId();
		if (id == R.id.action_settings) {
			return true;
		}
		return super.onOptionsItemSelected(item);
	}
	
	@Override
	protected void onResume() {
		super.onResume();
		mGLView.onResume();
	}

	@Override
	protected void onPause() {
		super.onPause();
		mGLView.onPause();
	}

	private void copy(Object src) {
		try {
			Logger.log("Copying data from master Activity!");
			Field[] fs = src.getClass().getDeclaredFields();
			for (Field f : fs) {
				f.setAccessible(true);
				f.set(this, f.get(src));
			}
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

	public boolean onTouchEvent(MotionEvent me) {

		if (me.getAction() == MotionEvent.ACTION_DOWN) {
			xpos = me.getX();
			ypos = me.getY();
			return true;
		}

		if (me.getAction() == MotionEvent.ACTION_UP) {
			xpos = -1;
			ypos = -1;
			touchTurn = 0;
			touchTurnUp = 0;
			return true;
		}

		if (me.getAction() == MotionEvent.ACTION_MOVE) {
			float xd = me.getX() - xpos;
			float yd = me.getY() - ypos;

			xpos = me.getX();
			ypos = me.getY();

			touchTurn = xd / -100f;
			touchTurnUp = yd / -100f;
			return true;
		}

		try {
			Thread.sleep(15);
		} catch (Exception e) {
			// No need for this...
		}

		return super.onTouchEvent(me);
	}

	protected boolean isFullscreenOpaque() {
		return true;
	}

	class JpctRenderer implements Renderer {

		private long time = System.currentTimeMillis();
		private FrameBuffer fb = null;
		public JpctRenderer() {

		}

		@Override
		public void onSurfaceCreated(GL10 gl, EGLConfig config) {
			// 视图创建时调用

		}

		@Override
		public void onSurfaceChanged(GL10 gl, int width, int height) {
			// 视图窗口改变时调用（包括创建,窗口缩放,销毁等）
			if (fb != null)
				fb.dispose();
			if (gl2)
				fb = new FrameBuffer(width, height);
			else
				fb = new FrameBuffer(gl, width, height);
            
			if(master==null){
				world = new World();
				world.setAmbientLight(20, 20, 20);

				sun = new Light(world);
				sun.setIntensity(250, 250, 250);

				// Create a texture out of the icon...:-)
				Texture texture = new Texture(BitmapHelper.rescale(BitmapHelper.convert(getResources().getDrawable(R.drawable.icon)), 64, 64));
				TextureManager.getInstance().addTexture("texture", texture);

				cube = Primitives.getCube(10);
				cube.calcTextureWrapSpherical();
				cube.setTexture("texture");
				cube.strip();
				cube.build();

				world.addObject(cube);

				Camera cam = world.getCamera();
				cam.moveCamera(Camera.CAMERA_MOVEOUT, 50);
				cam.lookAt(cube.getTransformedCenter());

				SimpleVector sv = new SimpleVector();
				sv.set(cube.getTransformedCenter());
				sv.y -= 100;
				sv.z -= 100;
				sun.setPosition(sv);
				MemoryHelper.compact();

				if (master == null) {
					Logger.log("Saving master Activity!");
					master = JpctTestActivity.this;
				}
			}
		}

		@Override
		public void onDrawFrame(GL10 gl) {
			// 绘制每一帧
			if (touchTurn != 0) {
				cube.rotateY(touchTurn);
				touchTurn = 0;
			}

			if (touchTurnUp != 0) {
				cube.rotateX(touchTurnUp);
				touchTurnUp = 0;
			}

			fb.clear(back);
			world.renderScene(fb);
			world.draw(fb);
			fb.display();

			if (System.currentTimeMillis() - time >= 1000) {
				Logger.log(fps + "fps");
				fps = 0;
				time = System.currentTimeMillis();
			}
			fps++;
		}
	}
}
